苎麻织物增强PLA-PCL复合材料的制备及其性能研究  

Preparation and Property of PLA-PCL Copolymer Composite Reinforced by Ramie Fabric

作　　者：刘训堃[1] 滕翠青[1] 余木火[1] 

机构地区：[1]东华大学纤维材料国家重点实验室,上海200051

出　　处：《塑料工业》2007年第1期22-24,共3页China Plastics Industry

基　　金：国家自然科学基金(50573010;20504006)

摘　　要：采用原位聚合法制备了聚乳酸-聚已内酯(PLA-PCL)／苎麻复合材料。研究了硅烷偶联剂(KH550)预处理、纤维含量以及成型工艺对PLA-PCL／苎麻复合材料力学性能的影响。结果表明,经KH550处理后,复合材料的力学性能有不同程度的提高,拉伸强度由49．84MPa到68．95MPa,弯曲强度由34．84MPa提高到65．06MPa,冲击强度由30．13 J／m^2提高到53．54 J／m^2；。在纤维的质量分数为45％,成型温度为170℃,复合材料具有最优性能；采用原位聚合法制备PLA-PCL／苎麻复合材料,复合材料的界面性能较好。PLA-PCL/ramie fabric composite was prepared by means of in-situ polymerization. The effects of the pretreatment of ramie fabric with silane coupling agent, the content of the fiber and molding conditions on the mechanical properties of PLA-PCL/ramie fabric laminate were studied. The results showed after the treatment by the coupling agent KH550, the mechanical properties of the composite were improved to a certain extent, among which tensile strength increased from 49.84 MPa to 68.95 MPa, bending strength increased from 34.84 MPa to 65.06 MPa, impact strength increased from 30.13 J/m^2 to 53.54 J/m^2 ; when the mass fraction of the fabric was 45 % and molded at 170 ℃, the mechanical properties of the composite were the best, and the composite prepared by means of in-situ polymerization had better interfacial property.

关 键 词：苎麻织物 聚乳酸 聚己内酯 全降解复合材料 硅烷偶联剂 力学性能 

分 类 号：TQ327[化学工程—合成树脂塑料工业]